40266540 has 72 divisors (see below), whose sum is σ = 129336480. Its totient is φ = 10105344.

The previous prime is 40266509. The next prime is 40266563. The reversal of 40266540 is 4566204.

It is a happy number.

40266540 is a `hidden beast` number, since 4 + 0 + 2 + 6 + 654 + 0 = 666.

40266540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3520 + ... + 9639.

It is an arithmetic number, because the mean of its divisors is an integer number (1796340).

Almost surely, 2^40266540 is an apocalyptic number.

It is an amenable number.

40266540 is an abundant number, since it is smaller than the sum of its proper divisors (89069940).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40266540 is a wasteful number, since it uses less digits than its factorization.

40266540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13191 (or 13186 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 40266540 is about 6345.5921709483. The cubic root of 40266540 is about 342.7531366075.

The spelling of 40266540 in words is "forty million, two hundred sixty-six thousand, five hundred forty".